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. , ; . <br /> � PUMP SELECTION PROCEDURB <br /> ^A. Debermine pamp capactty: <br /> Gravlty Diatrlbntlon Elb rEAFORATIOq OF A �tED I.AtERAL <br /> 1. Minimum suggesfied is 600 gallons per hour(10 gpm)b etay ehesd df e,�.,,aw, . <br /> water use rabe. <br /> 2. Maximum suggesbed for delivery to a drop box of a home system is 2,700 . _ '`.� <br /> .:...::..:::...... .�«.N.a�.�u►t�.- <br /> pallons per hour(45 gpm)to prevent build-up of pressure in drop box. �i:�`'w.r s.w�,r•, ���^.k�"',.,.«�,« .�... <br /> ' 4":'�:. • �Mb��� <br /> hrlw 1N� IIMY�MI�N� <br /> rnanre nlatribnao� � � �►°""�. <br /> 3. a. Select number of perforeied tate.�rals 3 �,� �u.� �r�w• <br /> .��.�.w. <br /> h Select perforation spacing=_ .3 ft. . �_.�.>..::. :�:•. .,N.��:��« <br /> c. Sub ct 2 fw from the rocic layer length: �,�:, ���+w« <br /> 1�'��I�r�»�-2 fG•„(al�R. ' �'� �� <br /> � e.�►��.r,►'""iw <br /> d. DM�ine the number of sp�aes betwe�r►perForations. <br /> �8th t���°�n8"-�'-��'+-�-k._.�3_�s rw�OF�tPo1u►'rio�t o�uttC�BS w CPM <br /> e. 3;�apacrs+i• a�perforations/laMral <br /> ' f. Multlply perforadons per lateral by number of laterals to � tr�.a �toradon a�W,�st <br /> �total nurnber of perforations. <br /> . x�'1.��Perforations. �I21�o,A. '�' ��' <br /> �.o. � o.� oa� <br /> g• � x�s�'-8P�"� i.soe o.o i.a <br />. - zs o.� �.i� <br /> SELECTED PUMP CAPACI'i'Y � 3.0 o.�s ta8 <br /> -�-gP 4A 1.73 1.47 <br /> , SA 126 1.66 <br /> B.D!t!lQl�t1!�ilid!'lQ1/�IIlttlf�: <br /> '�1. Elevadon difference between mp and point of discharge. y k���d�����,�� <br /> �Eeet . <br /> 2. If pumping ro a preasure distribution system,add five feet for pressure <br /> required at manifold �, � <br /> _�'�feet � <br /> 3. Friction loss �P��E�► <br /> a. Enter friction loss table with gpm and pipe diameter. Aoinc of D;ach.rse <br /> Read frlction loss in feet per 100 feet from table. ' ib2- <br /> F.4= �• ft./100 ft of pipe Elevation Dit'faenoe <br /> b. Determine tohal pipe length from pump to discharge . p,�„p 4,3 <br /> poin� Add 25 percent to pipe length for�tNng . <br /> lo�,or uae a fitting lass chart. Equivalent pipe F-isb . <br /> length-1.25 Nmes pipe length= <br /> 13 inch 2.0 inch 3.0 inch <br /> �ls D X 1.ZJ= �� . � Pttaks fo�per f00 R d pipe <br /> c. Caiculate total frlction loss by multiplying <br /> frlction loss in k/100 R b equivalent pipe length. i2 0.9�6 0.� <br /> Total hiction loss= �. �y x, �. L +100= ��' feet la 1.28 o.3s <br /> 4. Total head required is the sum ef elevation difference, 16 1.63 0.48 . <br /> al head uirements,and total f�iction loss. 18 2.03 0.60 <br /> � �i 20 2.a� a�3 o.tt <br /> ' 2S 3.73 1.11 0.16 <br /> , �L_+_��+� 30 5.23 I SS 0.23 <br /> (1) (2) (3cl 3S 7.90 2.06 0.30 <br /> 40 11.07 2.64 0.39 <br /> ' 45 14.73 3.28 0.48 <br /> TOTAL HEAD 3'3 feet � ' 3.99 0.58 � <br /> SS 4.76 0.70 <br /> . 60 5.60 0.82 <br /> '-`C. Pump selection <br /> 1. A pump must be selected to deliver at least�_gpm (Step A) <br /> with at least_�feet of total head (Step B). <br /> � <br />